Mouth guard



FIG. 1 is an upper rear perspective view of a mouth guard for treatment of temporomandibular disorder showing my new design;

FIG. 2 is a first side view of the mouth guard shown in FIG. 1;

FIG. 3 is a second, side view of the mouth guard shown in FIG. 1;

FIG. 4 is a rear view of the mouth guard shown in FIG. 1;

FIG. 5 is a front view of the mouth guard shown in FIG. 1;

FIG. 6 is a top view of the mouth guard shown in FIG. 1; and,

FIG. 7 is a bottom rear perspective view of the mouth guard shown in FIG. 1. 

The ornamental design for a mouth guard, as shown and described. 